If he is in status of F-1 and attending college , in that case he is in status and shuold be problem. But. They might ask question why community college and why undergraduate college after graduating? Your friend should be able to answer all possible question that will satisfy to vissa issuer. So visualise all possible questions and find the right answer but his answer must be consitant and corroborating with privious answer. They ask question like a lawyer. I hple he will be fine. Couple of my friends got admission in next level program and camet back to Nepal with new I-20. Think of different options and adopt the best that you think. Good luck.